Test31Spring

# Test31Spring - Write your answer in a sentence. 4. (5 pts.)...

This preview shows pages 1–6. Sign up to view the full content.

Name: _______________________ Show All Work!!! 1. (10 pts.) A river’s current is 6 mph. A boat travels 50 miles downstream in the same time it takes to travel 30 miles upstream. What is the speed of the boat in still water? (What is the speed of the boat, without the current) Write your answer in a sentence! 2. (10 pts.) Derek can install a countertop in 5 hours. Stacy can perform the same job in 4 hours. How long will it take them, working together, to install the countertop? Write your answer in a sentence. 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
3. (15 pts.) A ball is launched from a rooftop with an upward velocity of 24 ft/sec. The height, in feet, of the ball, t seconds after having been launched from an 40-ft. high rooftop is given by: 40 24 16 ) ( 2 + + - = t t t h . a. After how long will the ball reach the ground? Write your answer in a sentence. b. After how long will the ball be 40 feet above the ground?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.